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CASEMENTS 


DAVID LUPTON’S SONS COMPANY 
— *) = 8PHILADELPHIA 


CHICAGO NEW YORK PITTSBURGH BOSTON 
CLEVELAND DETROIT BUFFALO 
ST.LOUIS ATLANTA | BALTIMORE 


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utility. 


Craftsmanship 


q "N Lupton Casements, American skill in 


accurate, interchangeable manufactur- 
ing is applied to a product which for 
centuries has been linked with the 
genius of European architecture. 


The casement window was created 
from an ‘instinctive feeling for artistic | 
form. F 0! - sh er beauty the slender, 
purposeful ines of the early iron case- 


ments have never been surpassed. 


And the casements described in ihe 
following pages prove that—even as. 


| those early casements combined beauty 
with utility within the limitations of 


medieval handicraft and glass- making 


—so today an equal standard of beauty 
VAS: compatible with far higher standards 
OF comfort, Ou age ‘practical 


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Lupton Casements 


SIDE from its architectural appearance, the quality 
of a casement depends on three things: 


1. Correct mechanical design. 
2. Artistic, substantial hardware. 
3. Sound workmanship. 


The first two are easily appraised: if they be 
present, the fact speaks for itself. And we need only 
refer to the detail drawings showing the construction, 
and to the illustrations of the hardware, to emphasize 
the fact that Lupton Casements are in the front rank 
as regards these essential items. 


But workmanship is a far more elusive quality. 
Unless tools are employed, which by their very nature 
compel correctness, the product will be no better than 
the workman. Of two men—one highly skilled, the 
other less skilled—both working with primitive tools, 
the former will produce a good article, the latter an 
inferior article. But only a few will be able to say 
exactly what the one did that the other did not. 


The more exclusively an article is wrought by hand, 
the more this statement applies. And it applies today 
to casements more than to most other products of iron 
and steel. For until quite recently the manufacture of 


HERE small lights of glass are 

desired for a certain artistic 
effect, yet where the size of the sash 
does not make steel muntins necessary, 
we furnish leaded glass at a corre- 
sponding price to suit the architect’s 
specifications. 


casements was very largely a hand process. They 
would open easily or stick; they would keep out wind 
or leak; the hardware would or would not be free from 
rattle, according to whether some individual worker, 
using hand tools or at least hand measurements, had 
exercised the requisite skill and care. 


Under those conditions the quality of the windows 


depended strictly on the quality of the workman, and 
any change in his efficiency was reflected at once in 


the product. 


In effect, Lupton’s has done for casements what 
many American makers of other iron and steel products 
have done in their lines, namely, introduce processes 
of standardized, interchangeable manufacture in quan- 
tity by which close limits of tolerance are maintained 
through the use of tools, jigs and gauges, with minimum 
reliance on the personal element. 


Since 1908, David Lupton’s Sons Co. has been 
developing production methods for the higher types 
of industrial and office building sash in which oxy- 
acetylene welded joints, closely-fitted integral weather- 
ing and accurate alignment and erection were required. 
All this was done on a quantity scale, involving the 
use of jigs and tools, insuring interchangeability of 
product, till today we stand in an unequaled position 
for the rapid, accurate production of those types of sash. 


While industrial sash does not generally require 
such close limits as casement sash, the larger scale of 
industrial work often involves much more difficult 
mechanical problems than the maintenance of close 
fits in moderate sized windows. And the same is true 
of special doors, also of the finer types of office windows, 
which latter have for years been standard Lupton 
products. 


Hence the manufacture of Lupton Casements and 
Double Hung Windows involves for us only novelty 
of design, not of method. The limits are closer and 
rigidly standardized; the casement bars are process- 
straightened before cutting; the finish is smoother, and 
more time is spent is fitting; but every essential process 
has for years been familiar to Lupton mechanics. It 
is for this reason that we present Lupton Casements 
as equal to the finest of their kind—the joint product 
of European artistic genius and American manufac- 
turing skill. 


Types. Lupton Casements are made in all standard 
opening arrangements, as follows: 
Side hinged, single or double, opening in or out. 
Top hung, opening out. 
Vertically pivoted. 
Horizontally pivoted. 
In addition, we make casements with the projected 
movement shown on Pages 20 and 21. This movement, 


RANSOMS are desirable in resi- 

dences to permit ventilation with- 
out draft. They are also useful with 
outward-opening casements to give 
clearance at the top for awnings. 
Stationary transoms will be furnished 
if desired, or stationary and operated 
transoms may be used in different 
openings. 


Boette 


ERTICALLY pivoted casements 

are appropriate for clubs and 
libraries, and for the second stories of 
stores and business buildings gen- 
erally. They may be used for offices, 
as suggested in the sketch below. 
They are controlled by peg stays. 


which was first applied to solid steel sash by this 
Company, has marked advantages over the top-hung 
and horizontally pivoted movements, as the sash 
stays in any position by inherent balance aided by 
friction, no adjusters being used. The sash may open 
out at the bottom or in at the top, as specified. 


To meet certain conditions, the projected move- 
ment may be applied also, in place of hinges and 
adjuster, to side-opening casements. It is best to con- 
sult us regarding this. 


Side-hinged casements are made to open in or out 
according to the intended treatment of awnings, 
draperies, shades and screens. Outward opening is 
advisable in all cases unless there is some primary 
reason to the contrary: it permits entire freedom in 
the use of draperies; and by using windows hinged at 
left and right in pairs it is possible to prevent rain from 
entering without closing the windows, and to catch 
the breeze in summer. Screens may be either hinged 
or divided. 


Vertical pivoting is employed chiefly for sash 
units too wide to make hinging advisable on account 
of the torsional strains involved. In general the side- 
hinged types are preferable. 


Making and Fitting. The members are of low 
carbon steel, of heavy section from our own rolls, 


straightened by hydraulic process and free from ham- 
mer marks. The mitres are accurately machined to 
gauge length, and solidly oxy-acetylene welded. The 
welds are then ground to a true surface. 


Screws for hinges and adjusters are located by jigs 
to ensure exact location of the sash in frame; and the 
holes are drilled, not punched. After the sash are 
assembled in their frames, a test is made to determine 
whether the edges of the sash make contact at all 
points, and a final fitting corrects whatever slight in- 
accuracies are then found. 


The sash and frames are carefully cleaned of rust 
and scale, and are given two shop coats of paint: see 
Specifications, Page 28. 


Glazing. Glazing may be done on the inside or 
outside—the order for the windows must state which 
is intended. For inside glazing, the steel glazing bead, 
Section 351, is recommended. It gives a finish line 
even with the sight lines of the sash and muntins. 
For the bottom an extruded bronze bead, Section 
354, may be used at an additional price; it does not 
corrode, and its channel catches condensation. 


Lupton Casement putty should always be used. It is 
essential for outside work, as litharge putty breaks away. 
Steel glazing beads are never used for exterior glazing. 


Sash will be arranged for double glazing if specified. 


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IDE hinged casements opening 

out are preferable for residences. 
They leave the window sill clear, and 
the adjusters can be located inside 
without special sill treatment. 

The sketch below shows two case- 
ments in an opening with a steel 
mullion between them. By using 
left and right casements in pairs one 

“can usually be opened without ad- 
mitting rain. 


Maximum Sizes 


PPROXIMATE maximum sizes 
for single units are as follows: 
Side-hinged casements, opening in- 

ward or outward— 
Width not to exceed 2 feet 9 
inches, height not to exceed 8 feet 
0 inches. 
Top-hung casements, opening out- 
ward— 
Width not to exceed 5 feet 6 
inches, height not to exceed 4 feet 


0 inches. 
(Continued on next page) 


Combinations of Units. Each single or double 
casement, with its bar steel frame, is a single self- 
contained unit. Two or more units, however, may be 
erected together in an opening, and separated either 
by Lupton mullions, Sections Nos. 102 and 116, or by 
wood, brick or masonry mullions. Or they may be 
combined in a built-up framework of pressed or rolled 
steel, like the large circle-head casements shown on 
Pages 18 and 19. Projected casements are built in 
vertical groups of two or more into a single frame. 


Transoms. Transoms may be projected, opening 
in at top or out at bottom; hinged and opening in at 
top or out at bottom; horizontally pivoted; or sta- 
tionary. The desired type must be specified, as prices 
vary. The projected movement here shown is much 
to be preferred. 


Muntins. Steel muntins, when used, are of T 
shape, Section 353, as shown on Page 29. They are 
oxy-acetylene welded to the sash bars and at their 
intersections, making a one-piece structure with no 
internal surfaces. The intersections are flat, hence 
do not break the architectural lines. 


Except where leaded lights are preferred for 
architectural effect, the present tendency is toward 
large lights giving minimum obstruction to light from 
muntins and other members. 


10 


Suggestions for Selecting 
and Ordering 


(OE ieee ce” casements are preferable 
under nearly all conditions, especially for resi- 
dences. 


For inward-opening casements, always specify 
whether inside or outside adjusters are wanted. Inside 
adjusters require more sill clearance, or else notches in 
the sill where the adjuster is attached. 


Left and right casements in pairs are preferable, 
since then one can be opened in almost any weather. 


A casement, hinged at the left, when seen from 
INSIDE, is called left-hand. A casement hinged at 
the right is called right-hand. Use these terms when 
ordering. 


Note tables of maximum sizes on this and the 
preceding page. These sizes apply to one-light case- 
ments. The use of welded muntins permits these sizes 
to be increased, as the muntins add to the stiffness of 
the sash. We should be consulted before ordering. 


Projected casements may open in at the top or 
out at the bottom, at no difference in price. If desired, 
at a moderate increase in cost the upper sash may 
open out, thus acting as a rain shed, while the lower 
one opens in, acting as a wind shield. Owing to the 
effect of wind pressure, we should be consulted before 
larger sizes than those named in the table are specified. 


11 


Maximum Sizes 


(Continued from Page 10) 


Vertically pivoted casements— 
Width not to exceed 4 feet 3 
inches, height not to exceed 8 feet 
0 inches. 

Horizontally pivoted casements— 
Width not to exceed 4 feet 6 
inches, height not to exceed 4 feet 
6 inches. 

Projected, opening top or bottom— 
Width not to exceed 4 feet 6 
inches, height not to exceed 3 feet 
6 inches. 

When welded muntins are used 

these limits may be exceeded. 


IDE-HINGED casements, open- 

ing in, are sometimes preferred 
for business buildings. They permit 
iron grills or screens to be placed 
close to the window, and with marble 
or terra cotta sills rain is not objec- 
tionable. Transoms may be used with 
these or any other type of Lupton 
Casements. 


ASSESSES SAIRUSSDNORSN SOCA MIE me 


Double Casement, open- 
ing in, with plate frame 
added. 


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13 


HE use of large lights without 

muntins gives a sense of space 
and freedom when looking out. It is 
coming into vogue not only in busi- 
ness buildings but in residences as 
well; and the architectural treatment 
is readily adapted to it. 


Single Casement, opening 
out, with plate frame 
added. 


14 


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RAMES of formed steel plate will 

be furnished at an extra price 
where specified with any of the case- 
ments shown in this catalogue. An 
example is the large circle head case- 
ment shown on Pages 18 and 19. They 
are made of heavy steel plate with all 
corners oxy-acetylene welded. Their 
use is common in large openings con- 
taining built-up mullions and imposts. 


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Vescad. LIOR EL IL A 


RANSOMS may be used either for 

ventilation when the main win- 
dows are closed—as to free draperies 
of tobacco odors, to ventilate bed- 
rooms without drafts, etc.—or simply 
for artistic effect in openings where 
unbroken windows would appear too 
high. The projected type is best be- 
cause it requires no adjuster. See 
sketch on Page 9. 


Double Casement, open- 
ing in, with projected tran- 
som. Plate frame added. 


16 


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HE illustrations on this and the 

next page show how several case- 
ments may be combined with formed 
steel mullions and imposts to make 
a built-up window. Each casement 
unit with its frame is set complete 
into the steel framing. 


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18 


Built-up Window with 
two single and one double 
casement, opening in, and 
built-up transom. Small 
semi-circle opens in at top. 


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21 


N large casements, steel muntins or 

leaded lights may be used, or a 
combination of the two. Muntins are 
generally used to avoid the use of 
excessively large lights, as in the 
sketch below. They may, however, be 
used simply for decorative effect, as 
in the main illustrations on this and 
the next page. 


22 


French Casement Door, 
opening in, with station- 
ary circle head transom 
and welded muntins. 


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Vertically Pivoted Case- 
ments, with steel mullions 
and leaded glass. 


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Double Casements, open- 
ing out, with transoms 
and steel mullion. 


25 


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NOTE: For description of hardware, see Page 28. 


Nos. 1 to 6. Cremorne bolt for Double Case- 
ments opening in or out, and for French 
Casement Doors. Two side latches, No. 3, 
are used for doors and for windows 
over 4 feet high, opening in; also for all 
windows opening out. 


No. 7. Auxiliary latch for single, also ver- 
tically pivoted casements. One is used for 
windows from 4 to 8 feet high; two are 
used for higher windows. 


No. 8. Latch and handle for use with aux- 
iliary latches. 


No. 9. Single latch for windows up to 4 feet 
in height. 


Nos. 10 and 11. Alternative form of handle 
for alllatches. Wedge plate No. 10 is used 
also with latches Nos. 7, 8 and 9. 


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27 


No. 12. Single latch plate used with inward- 
opening casements, having latches Nos. 
7 to U1, 


No. 13. Triple latch plate for inward-opening 
casements, permitting window to be 
latched from 14-inch to 2 inches open. 


No. 14. Bronze hinge used with all casements. 


No. 15. Inside adjuster for use with inward- 
opening casements. 


No. 16. Inside adjuster for use with outward- 
opening casements. 


No. 17. Outside adjuster, used as an option 
to No. 15 with inward-opening casements. 


Nos. 18 and 19. Peg and stay used with 
vertically-pivoted casements. 


No. 20. Handle attached to left-hand case- 
ment of a pair. (Right-hand casement is 
operated by Cremorne bolt.) 


Specifications for 
Lupton Casements 


LL sash called for in these specifications or shown on the : 
drawings shall be casement sash made by David Lupton’s 
Sons Company, Philadelphia. 


Members. The members shall be of low carbon steel, 
specially rolled in solid one-piece sections. The weathering of 
opening sash shall be made by double contacts of the members 
without the addition of built-up or added sections. 


Assembly. All members shall be accurately steamed 
and shall be cleansed of rust and scale. 

All members shall be assembled by ‘welding, eliminatine all 
riveted joints and preventing corrosion at the points of assembly. 
Welded surfaces shall be ground smooth. 


Plates to receive hardware and other fittings shall be solidly 
welded in place. 

Face of members shall be free from hammer marks and sight 
lines shall be carefully preserved. 


Hardware. Hinged sash shall be hung on heavy solid bronze 
hinges with steel pins which have been given a driven Gt. The 
sill adjusters shall be substantially made and shall poe the sash 
securely at various angles of opening. 


All bronze hardware shall be what is known as Government 
mixture bronze, having a natural light statlary or “coinage 
tone which shall be given a bright finish. 


Glazing Stops. Glazing stops shall be of the pe shown 
on drawings and shall be made of drawn rolled steel. All stops 
shall be accurately mitred a: carefully fitted. They shall be 
shipped in place in the sash red by brass screws with French _ 
oval heads. All gee 2 ha € placed on the insideofthe 
sash. 


Paint. Casements shall rec e oS coat of rust- resisting metal 
primer, also a coat of dark gray semi- -gloss enamel non coats 
baked ot pelo mes the Cae 


Hardware 


UPTON Casement hardware combines refinement of design with abundant 
strength. At the option of the purchaser and ata corresponding price, solid 
bronze hardware may be used, or steel bars with malleable iron cast parts. 
The hinges are in all cases bronze; the tubular rod connecting upper and lower 


latches is always steel. 


The Cremorne bolt has a rack and pinion movement instead of the cheaper 
but less mechanical lever movement sometimes used. 


Bronze parts are “light statuary” color and finished bright. Malleable iron 


and steel parts are electro-galvanized. 


28 


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SECTION 320 


SECTION 322 


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SECTION 353 


SECTION 321 


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SECTION 102 


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SECTION 351 


SECTION 354 


SECTION 116 


2 


SECTION 303 


SECTION 320—Frame member of all 
Lupton Casements having hinged, 
pivoted or projected sash. 

SECTION 322—Top, Bottom and Side 
Rail member of all outward open- 
ing sash. 


SECTION 102—WMiullion and Transom 
Bar for smaller multiple Casements. 


SECTION 116—Miullion and Transom 
Bar for larger multiple Casements. 


29 


SECTION 353—Muntin Member. 


SECTION 351 and SECTION 354— Glaz- 
ing beads. Section 354 is extruded 
bronze, and is furnished on speci- 
fication only. 


SECTION 321—Top, Bottom and Side 
Rail member of all inward open- 
ing sash. 

SECTION 303—Frame member of all 
stationary sash. 


30 


Cupton 
DOUBLE 


HUNG 
WINDOW 


PATENTS APPLIED FOR 


An All-Purpose Window © 
OT merely for front elevations, where dignity 
and simplicity of line are desired— 


Not merely for sides, rear and light courts, 
where heretofore compliance with Underwriters’ 
rules has usually resulted in the use of poorly- 


The Lupton. Double Tung Window is a 


finely- made, distinctive Jooking window for 
every elevation of | hotels, apartment houses, 
dormitories, offices. and fine residences. By 
its use the architect. escapes the necessity Of 
using wood windows for appearance in the front - : 


: elevation and | wos metal windows 


where fire hazards exist. 


“Its efficiency” as a fee saver is remarkable. _ : 
With all its atmosphere of quality, it is not ta a 
: luxury, but an investment. ee S 


32 


Lupton Double Hung Windows 


(Patents applied for) 


The Lupton Double Hung Window can- 
not be compared with any other window. 
Not only is it wholly unlike the familiar 
“sheet metal window,” but its design, closeness of fit and easy 
movement place it in a special class among the highest types of 
sliding windows of whatever material made. 


A New Principle in 
Steel Plate Windows 


Because of its novel design, the Lupton Double Hung Window 
gives new and surprising values to the terms “‘draft-tight,”’ ‘‘free- 
working’’ and ‘“‘non-rattling.’’ Its leakage is negligible, even in a 
gale: it has no weather strips, yet it moves as easily—almost—as a 
roller shade. It is the ideal window for hotels, apartment houses, 
dormitories, clubs and offices, where the heating costs are high in 
proportion to the occupancy. 


In such buildings, with ordinary windows, the air leakage far 
exceeds the ventilating needs, and is a much greater cause of heat 
loss than convection. By using Lupton Double Hung Windows that 
heat loss is prevented. 


Aside from its weather tightness, the Lupton 
Double Hung Window is much stiffer, hence 
easier to erect without distortion, than other 
windows superficially similar: it is free from all 
liability to internal corrosion: it is splendidly built 
—a “real job”? mechanically; and its outward 
appearance fully sustains its internal quality. 


An ingenious form of 
jamb eliminates all the 
leakage due to manu- 
facturing variation in size and fit of the usual 
type of sash guides. A single, easily-main- 
tained dimension is all that is required; yet 
air must pass three separate contacts to get 
into the room. 


Jamb Tightness Due 
to Novel Design 


33 


aaa r re rr 


Even with dies and jigs, accurate work is im- 
possible where light-gauge material is used. 
The product will spring back in the dies accord- 
ing to its hardness; it will bend in assembling and again in erecting; 
and the running fits must be made loose to avoid binding. 


Heavy Gauges and 
Accurate Tools 


In Lupton Double Hung Windows the gauges of metal have been 
chosen with the single purpose of producing a true-fitting, substantial 
window. The members are heavy enough to take accurate shape in 
dies: they hold their form during assembly: and the finished window 
is a rigid, self-supporting structure, whose subsequent usefulness 
does not depend on how carefully it was squared up on erection. 


.. Naturally the Lupton Double Hung Window costs more 
to make than less carefully planned windows. But con- 
sidering its quality the difference is small. And that 
difference is saved to the owner many times over in the coal bill. 
For leaky windows are a continuing drain on the coal pile—a drain 
that lasts as long as the building and grows worse from year to year. 
One investment in Lupton Double Hung Windows saves that drain. 


Lowest 
Final Cost 


The entire construction is of 
formed or drawn steel plate. 
Both sash and frame are assem- 
bled by welding, ensuring permanent rigidity 
and leaving no crevices by which rain can enter 
to cause corrosion. 


General 
Construction 


The sill, the reveal molding at the jambs, 
and the sash members are extra heavy. 


This feature is exclusive to 
Lupton Double Hung Windows. 
Taken in connection with their 
heavy, accurate construction, it is the main 
reason for their draft-tightness. Screwed to each 
jamb are three formed steel channels—the part- 
ing strip and two guide members. The guide 
members have legs of unequal length: they are 


The Novel 
Jamb Design 


34 


backed by U-shaped flat springs, which are compressed by screws 
passing through them into transverse reinforcing strips. These 
screws may be tightened or slackened, as desired. 


The side rails of the sash are ‘“‘Shooked”’ over the short legs of the 
guides. This limits their lateral play; and by turning the screws the 
contact between guides and sash can be adjusted to a nicety. 


This construction accomplishes three things: 


First, it largely avoids the errors arising where three separate 
guides are supported in more or less remote relation to each other; 
and it provides compensation for such errors as remain. 


Second, it does not even then depend for draft-tightness on the 
guide members themselves, but rather on the exact fit obtainable 
between the “‘hook”’ at the sash edges and the guide strips. As the 
sides of the “hook’”’ are in one piece, the space between them 
(through which air leakage must pass) can be held to micrometric 
accuracy—a thing impossible where separate pieces are used. 


Third, whatever air leakage gets past the 
“hook” must still get past the contact between 
the sash and the parting strip. From the hori- 
zontal section it will be seen that there are 
really three contacts which air must pass. 


To ensure actual—not merely theoretical— 
accuracy, the side members of the _ sash, 
having the ‘‘hooked’’ edges, are formed in 
drawing dies rather than the usual bending 
dies. This practically eliminates variation due 
to hardness. 


As is plain from the construction, Lupton 
Double Hung Windows do not rattle. 


The jamb boxes are formed 
from steel of suitable gauge: 
their vertical seams are locked 
and spot-welded, and are permanently em- 


Frame 
Construction 


35 


el 


bedded in the masonry. As the working mechanism is entirely 
exterior to the jamb boxes, there are no exposed slots in the latter 
to admit rain and cause corrosion. 


At top and bottom the boxes are joined by continuous arc 
welds to the head and sill. 


This slotless, welded construction is peculiar to the Lupton 
Double Hung Window. It is of the greatest value: first, because it 
adds to the life of the window by eliminating corrosion in the jamb 
boxes, where it could never be reached for cleaning or repainting; 
second, because of its greater rigidity as compared with bolted 
assembly. Lupton Double Hung Windows do not have to be delli- 
cately squared and trued before grouting. 


The sash chains are concealed inside the guide members, which 
with the parting strip present a smooth, finished exterior. Water 
cannot get further than the inner surfaces of the guide members, and 
these are readily removed for painting. The weights are reached by 
unscrewing the parting strips and guide members and removing a 
loose panel in the weight box. 


The head is formed in one piece, suitably reinforced. This 
again makes a closer contact with the sash than could be had 
with a built-up construction. 


The meeting rails form part of the sash 
structure—they make a snug wedge contact 
without weather strips. 


The sash makes a stepped double contact 
with the sill. There is no interference with 
drainage, and no tendency to hold water by 
capillary action. 


The sash members are strip steel, 
heavy in themselves and stiffened 
by the shape given in forming. The edges are 
smooth—not sheared; hence they hold paint 
properly. The corners are solidly arc-welded. 


Sash Details 


36 


Muntins are used chiefly to hold wire glass in windows bearing 
Underwriters’ labels. They are of the flat plate type, welded at their 
intersections and to the sash rails. 


The glass is held at top and bottom by recesses in the sash 
structure. At the sides are flat, tap-screwed glazing bars, whose 
outer edges are concealed in the jamb slots. 


After putty is applied, the lights are first inserted at the top 
edge, raised to clear at the bottom edge, then dropped into place. 
The puttying is then finished and the side bars screwed in place. 


Standard hardware is bronze. It includes two bar 
handles, a pull-down handle for the upper sash, and 
a strong cam lock. 


Hardware 


If desired, electro-galvanized malleable iron hardware will be 
furnished at a lower price. 


When so specified, Lupton Double Hung Windows will be made 
to bear the Underwriters’ label. They must have %4-inch wire glass 
lights, not exceeding 720 square inches exposed area per light; hence 
vertical and sometimes horizontal muntins are necessary. These 
features increase the cost. 


Lupton Double Hung Windows are made in sizes to suit archi- 
tects’ specifications. Dimensions should be 
taken to points indicated in the sectional 
drawings on Pages 38 and 39. 


For monumental buildings 
and fine offices the Lupton 
Double Hung Window 
makes a splendid appearance when made in 
solid bronze. In that material it needs no 
painting and suffers no deterioration. 


Solid Bronze 
Windows 


We will make these windows in bronze, 
of gauges equivalent to the standard design 
in steel, when so specified. 


37 


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38 


GUIDE MEMBER 


ADJUSTING SCREW SPRING 


SPRING 


GUIDE MEMBER 


HE half-size horizontal section above shows the weight box bedded in the 
jamb, with the heavy reveal molding outside, and calking space between the 
molding and outer jamb. 


The guide members and parting strip are wholly external to the weight box, 
which is not slotted except at the top for the chains, where water cannot enter. 


The outer edges of the guide members are fulcrumed against the weight box, 
and the inner edges engage the hooked edges of the sash. The dotted arrows 
show the course which any possible air leakage must take, passing two flat 
contacts and one edge contact. 


In the vertical section on the opposite page, the one-piece head construction, 
the meeting rail contacts without weather stripping, and the double contacts 
and drainage features at the sill, are worthy of note. 


39 


Specifications 


LL windows (except as otherwise noted on plans) shall be 
A Lupton Double Hung Windows, made by David Lupton’s 
Sons Co., Philadelphia. 


All parts of these windows shall be made of steel plate 
of suitable gauges, formed or drawn in dies and assembled 
by welding. 


Material 


The head shall be No. 14 gauge steel, in one piece, with a 
formed recess to receive the upper sash, and suitable rein- 
forcements. It shall be solidly welded to the weight boxes so that no 
moisture can enter the latter. 


Frame 


The sill shall be of No. 12 gauge plate, formed in one piece 
with a double offset making two contacts with the lower sash. It 
shall have no hollows which can retain water. 


Both head and sill shall be solidly welded to the weight boxes. 
Welds shall start at a point behind the reveal brick and shall follow 
the contour of the jamb continuously to a corresponding point in- 
side. Bolted assembly will not be permitted. 


The weight boxes shall be No. 20 gauge steel, each closed at the 
back with a No. 22 gauge piece locked and spot welded. The sash 
shall not project into the interior of the weight boxes, and there 
shall be no slots in the weight boxes by which rain might enter. 


Attached to each weight box there shall be a parting strip and 
two guide members, all of No. 16 gauge galvanized steel. The guide 
members shall have flanges interlocking with formed edges of the 


40 


sash. By means of screws passing through the guide members it 
shall be possible to adjust the latter to make a draft-tight yet free 
sliding contact with each sash. Parting strips and guide members 
shall be easily removable for repainting their interior surfaces. 


Reveal moldings shall be No. 12 gauge steel, welded to the jambs. 


Sash Sash shall be made up entirely of No. 12 gauge strip steel 
shaped by being drawn through dies. The top, bottom and 
side rails shall be solidly welded at the corners, and the welds ground 


to a true surface. Edges shall be smooth, not sheared. 


The side glazing bars shall be No. 12 gauge strip steel, held by 
screws. Their edges next to the jambs shall be concealed by the 
guide members. Glazing shall be done from the inside. 


The side rails of the sash shall be die-formed to interlock with 
the flanges of the guide members attached to the jambs. 


The meeting rails shall make a snug wedge contact without 
weather stripping. 


Sash shall be hung on %-inch galvanized chain 
Hardware and 


Rows i 1] : : 
Fittings passing over malleable iron pulley with roller 


bearings. Weights shall be sectional. All screws 
and bolts shall be sherardized. 


Standard solid bronze hardware shall be furnished, consisting of 
two bar sash lifts, a cam lock and a pull-down handle for the upper 
sash. (At the purchaser’s option, electro-galvanized malleable iron 
hardware of same pattern will be furnished at a price to correspond.) 
Windows shall be given a thorough shop coat of window 


Painting : ie : 
manufacturer’s standard rust-resisting paint. 


41 


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